<https://www.srishtidigilife.co.in/ecommerce/product/case-relay/#product>
<http://schema.org/description>
"Uninterruptible Power for a Camera\r\n \t7.4V, 1,200mAh Lithium UPS Battery\r\n \tPowered by 5 VDC Power Source\r\n \tInternal Battery Allows Hot Swapping\r\n \tConnects to USB Battery or AC Adapter\r\n \tLED Indicator Light\r\n \tRequires Coupler for Camera Connection"
<https://www.srishtidigilife.co.in/ecommerce/product-category/tethering/accessories/>